Examine source code of xboxunity LiNK

{
  "name": "xboxunity LiNK",
  "version": "1.1resigned1",
  "description": "Check realtime LiNK stats",
  "permissions": [
    "storage",
    "http://phoenix.xboxunity.net/linkgizmo.php",
    "http://xboxunity.net/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "unity@ltt.dev.app"
    }
  },
  "icons": {
    "48": "favicon.png",
    "128": "UnityIcon128.png"
  }
}